part_of part of part of Homo sapiens Homo sapiens anatomical system kidney renal collecting system http://upload.wikimedia.org/wikipedia/commons/0/02/Gray1128.png UBERON:0004100 FMA:265239 uberon kidney collecting duct system Wikipedia:Collecting_duct_system The collecting duct system of the kidney consists of a series of tubules and ducts that connect the nephrons to the ureter. It participates in electrolyte and fluid balance through reabsorption and excretion, processes regulated by the hormones aldosterone and antidiuretic hormone. collecting duct system SCTID:279371005 tubulus renalis colligens